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(No Model.) l

J. P. JOHNSON.

WHEEL JACK.

No. 320,477. Patented June 23, 1885.

N. Pneus Phowumgnpm, wmingm, 0.a

UNITED STATES PATENT OFFICE.

JESSE F. JOHNSON, OF INDIANAPOLIS, INDIANA. y

WHEEL-JACK.

SPECIFICATION' forming part of Letters Patent No. 320,477, dated June23, 1885.

Application [iled April 8, 18S5. (No model.)

To all whom it may concern Be it known that I, JESSE. F. JOHNSON, aresident of Indianapolis, Indiana, have made certain new and usefulImprovements inWheel- Jacks, a description of which is set forth in thefollowing specification, reference being made to the accompanyingdrawings, in the several figures of which like letters indicate likeparts.

My invention consists in the peculiar form of a jack-screw the base ofwhich is adapted to rest upon the hub, the upper part of the screwcarrying a yoke which provides a rest for the felly, for the purpose ofraising the felly, so as to admit the removal of abattered spoke withoutcutting the tire, and will be understood from the following description.

In the drawings, Figure 1 is a side view of my device, showing the spokeforced out of line by means of the crank-screw, and a metal .socketfixed upon the end of the spoke, the

dotted lines indicating the normal position of the Spoke when its headis entered into the socket and the pressure of the crank-Screw removed.Fig. 2 is a front view of my device, showing the projection formed onthe base and top parts, to serve as guides for the spoke while beingoperated upon. Fig. 3 is a perspective view of the metal socket, andFig. 4 is a longitudinal section of the same.

In detail, b is the east-iron base, having at its upper end a threadedbore to receive the lower end of the right-and-left screw, ls frs, beingthe upper and right hand part of the screw, which enters a threaded borein the top of the jack, which is arranged to form a yoke having arms yy', connected by a crossbar, cb, the upper ends of the arms of the yokehaving notches n a, which receive the felly f and partially inclose itduring the operation of the device. A ratchet-wheel, mv, is bolted tothe central shank of the right-and left screw, and pawls pp are pivotedon each side, so as to engage alternately with the cogs of theratchet-wheel rw.

his a handle, which is intended to be inserted in the end of the casewhich carries the pawls, and sl is a slide held in place by a setscrewentering through a slot in the slide into the butt of the ratchet-case.This slide is adapted to move either way, and to pass over the rear endof either one of the pawls, pressof the pawl from engagement with theteeth of the ratchet-wheel. By this means either one of the pawls may bethrown out of gear and the ratchetwheel will turn freely in thatdirection, so that when the distance between the base and the top partofthe jack is to beincreased the ratchet is moved in one direction, andwhen that distance is to be lessened itqis to be moved in the other, andonly the pawl on one side is to be used at a time, the-oppo site onebeing held down by the slide si, which is moved so as to bind it at therear end. cs is a crank-screw passing through the crossbar cb and havinga swivel, sw, on its opposite end.

s is a metallic socket,which may be screwed into the felly from theunder side, or bolted through the felly and the tire, as desired, andthe socket-opening is conformed to the shape and size of the spoke. Itis frequently the case that the end of the spoke which enters the fellybecomes battered and worn by constant use and loose in the socket of thefelly, and rattles, and heretofore, in order to remedy this difficulty,it has been found necessary to entirely remove the spoke and put in anew one, and as a consequence the tire has to be cut to allow suchchange to be made.

My device is intended to avoid the necessity of cutting the tire or ofchanging the spoke, and it operates as follows: Vith aine saw the spokeis cut through close to the underside of the felly, the jack is thenapplied, the base resting upon the hub, the ratchet turned so that theyoke is forced upward until the felly rests in the notches of theyokearms, the spoke being between them and between the guides g ofthetop and the base of the jack. By means of the erank-screw and itsswivel, which lits against the side of the spoke, the spoke is forcedout of line and out of the way, as shown in Fig. l, after having firstbeen sawed through, so as to free it from the felly. A metal socket, s,is then fastened on the end of the Spoke, as shown in Fig. l, and thefelly is then crowded up by means of the jack operated by the ratchet,until the end of the spoke, which has in the meantime been suitablyfitted to the size of the socket by a burning-iron or any convenienttool, with the socket attached, will pass under the ing that end down soas to free the other end IOO vsubstantially as described.

and having one or more notches for the felly as described. 2 5

felly. The pressureY of the crank-screw is now gradually removed, andthe spoke will then resume its normal position. The felly is now loweredby a reverse movement of the screw of the jack, and the operation is nowcompleted by screwing the socket to the felly.

That I claim, and desire to secure by LetA ters Patent, is thefollowing:

l. The wheel-jack herein described, com,- prising the right-audleftscrew and base b, the yoke having arms y y', notches n n, united by thecross-bar eb, the crank-screw es, having swivel sw, and ratchet-wheel ornut connected with the right-and-left screw, with means forV operatingthe same, all combined 2. A wheeljack having a suitable base, threadedto receive the lower portion of' thel -right-and-left screw, a topVpiece threaded to receive the upper portion of the saine screw,

to restin,in combination with a ratchet incohanisln for operating thesame, substantially 3. A wheel-jack having a base and top adapted to bemoved in opposite directions or drawn toward each other by suitablemeehanism for operating a right-and-left screw entering t-he threadedopenings in the top and i base, in combination with a screw mechanismoperating` substantially at right angles to the liftingscrew, forpressing the spoke out of line, substantially as described.

4. A wheel-jack Whose base is adapted to rest against the hub, its upperpart to press against the under side of the felly, the two connected bymeans of a right-andleft screw, and provided with guides for holding thespoke in place, and suitable mechanism for pressing the spoke out ofline, all combined substantially as described.

5. A wheel-jack having a base adapted to rest upon the hub of the wheel,and a top piece provided witharms for receiving the felly, the twoconnected by means of a rightand-left screw,adapted to be operated ineither direction by suitable ratchet mechanism having guides g on thetop and base for partly inclosing the spoke, the crank-screw cs,provided with a swivel, sw, for forcing the spoke out ofline, allcombined substantially as described.

In witness whereof I have hereunto set my hand this 15th day of January,1885.

JESSE F. JOHNSON.

Vi tness es WM. E. BARTON, C. l. Jaoons.

